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6x-7=-21.9
We move all terms to the left:
6x-7-(-21.9)=0
We add all the numbers together, and all the variables
6x+14.9=0
We move all terms containing x to the left, all other terms to the right
6x=-14.9
x=-14.9/6
x=-2+1/2.0689655172414
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